public class Direction_Class {

    public final static Direction_Class FRONT=new Direction_Class();
    public final static Direction_Class BEHIND=new Direction_Class();
    public final static Direction_Class LEFT=new Direction_Class();
    public final static Direction_Class RIGHT=new Direction_Class();
    public Integer num=0;


    public void eat(){
        System.out.println("吃鸡排饭");
    }

}
